. 2009 Feb 19;64A(5):581–589. doi: 10.1093/gerona/glp005

Table 1.

Pearson Correlation Coefficients Between Inflammatory Biomarkers (N = 1,269)

Correlation Coefficient p Value	CRP^*	PAI-1^*	IL-6^*	IL-6sR	IL-2sR^*	sTNFRI^*	sTNFRII^*	TNF-α^*
CRP (mg/L)	1
PAI-1 (ng/mL)	.22	1
PAI-1 (ng/mL)	<.001
IL-6 (pg/mL)	.46	.22	1
IL-6 (pg/mL)	<.001	<.001
IL-6sR (mg/mL)	−.02	.12	.05	1
IL-6sR (mg/mL)	.588	<.001	.066
IL-2sR (mg/mL)	.10	.08	.18	.23	1
IL-2sR (mg/mL)	<.001	.004	<.001	<.001
sTNFRI (mg/mL)	.25	.15	.28	.30	.54	1
sTNFRI (mg/mL)	<.001	<.001	<.001	<.001	<.001
sTNFRII (mg/mL)	.20	.10	.24	.23	.59	.72	1
sTNFRII (mg/mL)	<.001	<.001	<.001	<.001	<.001	<.001
TNF-α (pg/mL)	.14	.22	.25	.19	.42	.45	.55	1
TNF-α (pg/mL)	<.001	<.001	<.001	<.001	<.001	<.001	<.001

Notes: CRP = C-reactive protein; IL = interleukin; PAI = plasminogen activator inhibitor; sTNFR = soluble TNF receptor; TNF = tumor necrosis factor.

Variables have been log transformed.